Patents Assigned to Signal Technology Corporation
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Patent number: 7255303Abstract: A paper guide for mounting in front of a paper dispensing slot, has a top wall angled downward with respect to the paper ejection direction by an angle alpha, a pair of opposed side walls at the sides of the top wall, angled inwardly relative to the side edges of the paper by the an angle beta, and also angled inwardly with respect to a line perpendicular to the rear edge of the top wall by an angled gamma, and a pair of mounting tabs, each respective mounting tab extending from a respective side wall for attachment against the paper dispensing device.Type: GrantFiled: August 24, 2004Date of Patent: August 14, 2007Assignee: General Signal Technology CorporationInventor: Paul W. Jenrick
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Patent number: 6979278Abstract: The invention provides hand levers having integrated controllers. A hand lever according to the invention may include a housing and a horn controller that is adapted to be electrically connected to a horn. The horn controller, which may include a horn button, is coupled to the housing and is accessible from the exterior of the housing. The controller may also be a speed controller for controlling speed or cruise control. The hand lever is adapted to control at least one of transmission shift position and engine throttle.Type: GrantFiled: October 27, 2003Date of Patent: December 27, 2005Assignee: General Signal Technology CorporationInventors: Sean E. Rick, Gary B. Swetish, Alan Simchayoff
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Patent number: 6967547Abstract: An RF switch includes first and second diodes characterized by an intrinsic region. Pin diodes and nip diodes are examples of such diodes with intrinsic regions. The diodes are stacked with facing first connections. A bias conductor extends from the first connections.Type: GrantFiled: June 24, 2002Date of Patent: November 22, 2005Assignee: Signal Technology CorporationInventors: Massimo M. Pellegrini, David C. Riffelmacher
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Patent number: 6648637Abstract: A system for sealing a lower edge of a temperature control chamber door to a temperature control chamber housing when the door is closed has a pair of opposed radiused corners provided at opposed lower corners of the door opening, and a resilient seal member having opposed radiused corners substantially complimentary in shape to the radiused corners of the opening.Type: GrantFiled: November 27, 2001Date of Patent: November 18, 2003Assignee: General Signal Technology CorporationInventor: John Patrick Quigley
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Patent number: 6587013Abstract: An RF power combiner. A plurality of RF inputs connect to a power combiner switch assembly. RF switches connect each input to a common node. A single stub matching circuit connects between the common node and an output node such that an open-ended transmission line stub extends from the output node. An RF output connector feeds an RF output connection from the output node. The stub of the L-match circuit has fixed length or variable length configurations. As a consequence, the impedances at the common and output nodes are more closely matched.Type: GrantFiled: February 16, 2000Date of Patent: July 1, 2003Assignee: Signal Technology CorporationInventors: Steven Arlin, Thomas J. Casale
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Patent number: 6545564Abstract: An RF signal divider useful in the 250 to 2500 MHz range includes an RF input connection and a plurality of RF output connections. A resistive path connects each RF output connection from an RF output connection with a impedance ZL to a common node with an impedance ZQ. An input impedance transformer couples an RF input connection with an input impedance ZL to the common node. This RF signal divider is characterized by good insertion loss variation and isolation over the entire frequency range and by a minimal circuit area.Type: GrantFiled: April 25, 2000Date of Patent: April 8, 2003Assignee: Signal Technology CorporationInventor: Theodore A. Coppola
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Patent number: 6518856Abstract: A power combiner circuit for RF signals includes a multi-path network for conveying a plurality of RF signals over a selected path or paths, to a common node. A switched RF impedance transformer connects between the common node and an RF load. The switched RF transformer switches between first and second transformation functions depending upon the number of network paths that are selected.Type: GrantFiled: October 13, 1999Date of Patent: February 11, 2003Assignee: Signal Technology CorporationInventors: Thomas J. Casale, Steven Arlin
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Publication number: 20020163208Abstract: An apparatus for latching a door against a frame has a door pin extending from the door and a handle lever rotatably mounted to the door and having an extending handle pin. A latch bar is mounted for reciprocating travel relative to the frame, the latch bar having a first slot having a cam surface adapted to receive the door pin, and a second slot adapted to receive the handle pin. The latch bar and handle have a first position where the handle pin enters the second slot and the door pin enters the first slot, and a second position where the handle pin contacts the second slot and the cam surface bears against the door pin. Rotation of the handle when the latch bar is in the first position causes the handle pin to bear against the second slot, moving the latch bar in a latching direction from the first position to the second position, so that the first slot on the cam surface bears against the door pin and urges the door in a closing direction.Type: ApplicationFiled: May 4, 2001Publication date: November 7, 2002Applicant: General Signal Technology CorporationInventors: John Patrick Quigley, Terry Ludwig
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Patent number: 6071340Abstract: A method of and system for determining the melt-level in a crystal growing system. A rangefinder emits a signal to reflect off the melt. The reflected signal is directed to a retroreflector. The retroreflector redirects the signal along a parallel path back to the melt surface. The redirected signal is reflected off the melt surface back to the rangefinder, where it is analyzed to determine the distance traveled by the signal. From this, changes in melt-level are determined and the melt-level may be appropriately controlled.Type: GrantFiled: February 27, 1997Date of Patent: June 6, 2000Assignee: General Signal Technology CorporationInventor: Zhixin Li
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Patent number: 6042645Abstract: A method for mounting the pull head of a CZ crystal puller includes the steps of mounting the pull head on a frame which is supported independently from the crystal puller receiving chamber. In particular, the pull head is mounted on a rigid frame which is supported by the same surface that supports the melt charge crucible. The pull head is then aligned relative to the rigid frame, rather than to the receiving chamber, and can be accurately aligned with the crucible rotation axis and positioned in order to insure that its rotation axis is vertical. In one embodiment, the method includes the step of mounting the pull head on a plate which engages alignment pins attached to the rigid frame. The alignment pins insure proper alignment of the pull head relative to the frame. When the receiving chamber is raised to allow the crystal to be removed, the plate is engaged by the receiving chamber and lifted off the alignment pins so that the pull head moves with the receiving chamber.Type: GrantFiled: October 22, 1998Date of Patent: March 28, 2000Assignee: General Signal Technology CorporationInventor: Zhixin Li
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Patent number: 6020783Abstract: A filter network having the capability of establishing multiple, tunable notch frequencies. A notch filter path is established for each notch frequency and includes a bandpass filter and inverter. An input RF signal covering a wide frequency range is applied to all the notch filter paths. Each notch filter path produces an output spectrum that is equal in magnitude and 180.degree. out of phase with respect to an undesired frequency spectrum. A combiner circuit combines the outputs of each notch filter path in parallel with the RF input signal to produce an RF output signal with all desired spectra unchanged and all undesired spectra attenuated.Type: GrantFiled: June 5, 1998Date of Patent: February 1, 2000Assignee: Signal Technology CorporationInventor: Theodore A. Coppola
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Patent number: 5968267Abstract: The uniformity of solid crystals grown by pulling a seed crystal from a molten charge material in a crucible is increased by eliminating vibration by supporting a housing for the solid crystal on a vibration isolator which rests on a supporting floor. Vibration isolators may also be placed between a crucible lift and rotation mechanism and the supporting floor. The crystal pull head for pulling the seed crystal also can be isolated from the remainder of the apparatus by vibration isolators.Type: GrantFiled: January 24, 1997Date of Patent: October 19, 1999Assignee: General Signal Technology CorporationInventor: Zhixin Li
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Patent number: 5944892Abstract: A crystal growing system has a plurality of crystal growing stations which are each comprised of a crucible, furnace, vacuum chambers and related equipment which is continuously used during the actual crystal growing process. A central process control console is connected to each crystal growing station so that growing parameters for all stations can be controlled from a single location. A common server unit services all crystal growing stations. The server unit is movable so that it can be positioned at each station both prior to initiating crystal formation and subsequent to completing crystal formation in order to service the station before and after the crystal growing operation. The server unit comprises a movable support structure which can be rolled along a set of tracks to be positioned sequentially adjacent to each station. The server unit includes a main hoist constructed to move a receiving chamber, either alone or together with a transition chamber.Type: GrantFiled: February 27, 1997Date of Patent: August 31, 1999Assignee: General Signal Technology CorporationInventor: Zhixin Li
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Patent number: 5932007Abstract: A puller apparatus for a Czochralski crystal puller system is provided which includes a primary puller chuck and a secondary puller chuck. The primary puller chuck is attached to a seed crystal. The secondary puller chuck is shaped to enclose and retain a portion of a growing crystal so that the growing crystal can be pulled by the secondary puller chuck.Type: GrantFiled: June 3, 1997Date of Patent: August 3, 1999Assignee: General Signal Technology CorporationInventor: Zhixin Li